So far, we've only used your product twice - about a week between applications. Before using it, our shower screen was quite badly stained, insofar as the glass appeared to have what I think it commonly called "glass cancer" (??)
That is, no amount of cleaning with other products available from supermarkets (or, similar) which supposedly remove soap stains and human body 'fats' (or, whatever..) seemed quite ineffective over time.
Yes, the shower cubicle appeared cleaner after using those pr...